Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 1994 >> Lumina Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Engine Controls - Tests W/Codes - V6) >> Self-Diagnostic Tests >> Code 55, ECM/Pcm Error

Code 55, ECM/Pcm Error

WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 1993 Pontiac Trans Sport, 1993 Oldsmobile Silhouette, 1993 Oldsmobile Bravada, 1993 GMC Vandura, and 1993 GMC Value Van. However, it is still accessible from the selected car via links, so may be relevant.

Ensure ECM grounds are good and MEM-CAL is properly latched. If okay, replace ECM/PCM. Clear codes and confirm closed loop operation. Check operation of SERVICE ENGINE SOON light.

scientia non olet · About Mike's Workshop Manuals